Identification tag holder



FIG. 1 is a perspective view of an identification tag holder showing my new design, with the broken lines showing for illustrative purposes only and forming no part of the claimed design;

FIG. 2 is a top plan view thereof, with the bottom being a mirror image;

FIG. 3 is a left side elevational thereof, with the right side being a mirror image;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a front elevational view thereof. 

The ornamental design for an identification tag holder, as shown and described. 